Ferroalloy refers to a product that is added to molten iron as a deoxidizer, elemental additive, etc. during steelmaking to make steel possess certain characteristics or meet certain requirements. An intermediate alloy composed of iron and one or more elements, mainly used in steel smelting. In the steel industry, all intermediate alloys used for steelmaking, whether containing iron or not (such as silicon-calcium alloys), are generally referred to as "ferroalloys". Some pure metal additives and oxide additives are also includediron. 

use as reductant in ferroalloy production. Not only is there a large chemical affinity between silicon and oxygen, butferrosilicon is low in carbon. Therefore, high silicon ferrosilicon (or siliceous alloy) is a kind of reductant commonly used in the production of low carbon ferroalloy in ferroalloy industry.75 ferrosilicon is commonly used in the high temperature smelting of metallic magnesium in the pidgeon process. When magnesium in Mgo is replaced, about 1.2 tons of ferrosilicon is consumed for every ton of magnesium produced, which plays an important role in magnesium production.

other uses. in the welding rod manufacturing industry can be used as welding rod coating. High silicon ferrosilicon can be used in the manufacture of silicone and other products in the chemical industry.